Amena2000
Amena2000 Amena2000
  • 25-02-2017
  • Mathematics
contestada

For a real number x, sqrt(sqrt(-x)) is equal
a) +x b) -x c) complex d) pure imaginary

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jtvatsim
jtvatsim jtvatsim
  • 25-02-2017
Hmm... this one is interesting, let me try by making sure we're thinking the same thing:

You're question looks like this?
[tex]\sqrt{\sqrt{-x}}[/tex]
Answer Link
Аноним Аноним
  • 25-02-2017
sqrt(-x) is pure imaginary. It will be in the form +√x i and -√x i
And the square root of
+√x i and -√x i are in the format X+iY and X-iY

So the answer is
c) complex
Answer Link

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need help on #15 please